The reference to "Ep 58 - Google Drive" likely relates to the interactive storytelling app, where "Google Drives" are commonly used by community creators to share custom backgrounds and overlays for their stories.
A new file had been added to his personal drive: YOUR_STORY_ENDING.pdf . Ep 58 - Google Drive
Here is an original story inspired by that creative community: The Artifact in the Shared Folder The reference to "Ep 58 - Google Drive"